US4345901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental prosthesis connecting apparatus
Assignee: METAUX PRECIEUX
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Filing: 1980-04-30
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Granted: 1982-08-24
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Expires: 2000-04-30
Abstract
Abstract Connecting apparatus for removable dental prostheses comprises a frustoconical male element attached to a base and including a cylindrical transverse groove and an oblique groove. A female part is essentially composed of a block having a frustoconical cavity matching the male element so that the female part can be fitted over the male element. A tubular sleeve accommodates a sliding member which is biased axially by a spring held in place by a cap screwed on one end of the sleeve. A tip attached to a threaded section at the end of the sliding member remote from the spring makes it possible to displace the sliding member axially against the bias of the spring. When the block is fitted over the male element, a section of the sliding member is caught by the edge of the oblique groove and moved axially, then enters the transverse groove, thereby interlocking the male element and the female part.
Inventors
- 👤 Mario Romagnoli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:58
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/225; A61C13/273; Y; Y10; Y10T; Y10T403/00; Y10T403/59; Y10T403/598
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
151 words
Connecting apparatus for removable dental prosthesis, of the type having a male part, a female part, and a device for joining said male part and said female part, wherein the improvement comprises: said male part being of substantially frustoconical shape; said female part being of substantially frustoconical shape; and said device for joining comprising means for securing said female member to said male member and preventing relative movement therebetween, said means for securing comprising a cylindrical sliding member incorporated in said female part and movable transversely with respect to a longitudinal axis of said female part, said male member having a substantially semi-cylindrical, laterally outwardly open, transverse groove, the surface of which is generated about a substantially straight line, for receiving said sliding member whereby said male part and said female part are interlocked and said sliding member and said transverse groove are coaxial when said sliding member is in place.
Claim 2
Dependent Claim
151 words
Connecting apparatus for removable dental prosthesis, of the type having a male part, a female part, and a device for joining said male part and said female part, wherein the improvement comprises: said male part being of substantially frustoconical shape; said female part being of substantially frustoconical shape; and said device for joining comprising means for securing said female member to said male member and preventing relative movement therebetween, said means for securing comprising a cylindrical sliding member incorporated in said female part and movable transversely with respect to a longitudinal axis of said female part, said male member having a substantially semi-cylindrical, laterally outwardly open, transverse groove, the surface of which is generated about a substantially straight line, for receiving said sliding member whereby said male part and said female part are interlocked and said sliding member and said transverse groove are coaxial when said sliding member is in place.
Claim 3
Dependent Claim
32 words
The apparatus of claim 1, wherein the axis of said sliding member is inclined with respect to a plane perpendicular to the common axis of said male part and said female part.
Claim 4
Dependent Claim
41 words
The apparatus of claim 1, wherein said sliding member includes at least a first section and a second section of smaller diameter than said first section, said first section of said sliding member intended to be received in said transverse groove.
Claim 5
Dependent Claim
25 words
The apparatus of claim 1, wherein said female part comprises a tubular sleeve made integral therewith, said sliding member being accommodated in said tubular sleeve.
Claim 6
Dependent Claim
34 words
The apparatus of claim 4, wherein said tubular sleeve includes internal seating means, further comprising spring means acting along the axis of said tubular sleeve for pressing said sliding member against said seating means.
Claim 7
Dependent Claim
23 words
The apparatus of claim 5, further comprising a removable cap fixed to one end of said tubular sleeve for supporting said spring means.
Claim 8
Dependent Claim
44 words
The apparatus of claim 1, wherein said male part includes a further groove disposed at a slight angle to the axis of said male part and acting as a guide surface for displacing said sliding member when the prosthesis is being fitted in place.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |